Gold and Silver: Comprising an Economic History of Mining in the United States, the Geographical and Geological Occurrence of the Precious Metals, with Their Mineralogical Associations, History and Description of Methods of Mining and Extraction of Values, and a Detailed Discussion of the Production of Gold and Silver in the World and the United StatesJ. Wiley & Sons, 1908 - 727 strani |
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Zadetki 1–5 od 100
Stran 3
... cent remained permanently . Of the 90 per cent of those who went to California as a result of the gold excitement , there were many undesirable individuals , many , in fact , who were wanted for misdemeanors in the States and other ...
... cent remained permanently . Of the 90 per cent of those who went to California as a result of the gold excitement , there were many undesirable individuals , many , in fact , who were wanted for misdemeanors in the States and other ...
Stran 6
... cent of the limited acreage of dredging ground in this state ( California ) was orchard , vineyard , or planted ground . A large portion of it was uncultivated bottom land which afforded a some- what precarious pasturage at some seasons ...
... cent of the limited acreage of dredging ground in this state ( California ) was orchard , vineyard , or planted ground . A large portion of it was uncultivated bottom land which afforded a some- what precarious pasturage at some seasons ...
Stran 9
... cents per ton per mile . " The interdependence of mines and railroads is also shown in the mines of Butte which largely send ... cent of all our coke ovens , and cutting down our vast forests without replanting . In fact , except in the ...
... cents per ton per mile . " The interdependence of mines and railroads is also shown in the mines of Butte which largely send ... cent of all our coke ovens , and cutting down our vast forests without replanting . In fact , except in the ...
Stran 14
... cent accord- ing to Jevons , which was the direct cause of Holland adopting the single silver standard and other countries bimetallism . " No attempt is made to enter into a discussion of the mining risk . It is true that much money has ...
... cent accord- ing to Jevons , which was the direct cause of Holland adopting the single silver standard and other countries bimetallism . " No attempt is made to enter into a discussion of the mining risk . It is true that much money has ...
Stran 78
... cent ) 0.16 . 0.18 . 3.33 Lead ( per cent ) . 0.25 . 0.08 . 47.95 The Cana mine yielded gold , silver , lead , and copper . The Sul- livan mine yielded gold and silver.2 Gold - bearing quartz found in pyritous mica - schist occurs at ...
... cent ) 0.16 . 0.18 . 3.33 Lead ( per cent ) . 0.25 . 0.08 . 47.95 The Cana mine yielded gold , silver , lead , and copper . The Sul- livan mine yielded gold and silver.2 Gold - bearing quartz found in pyritous mica - schist occurs at ...
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Alaska amalgamation andesite argentiferous assay auriferous average bed-rock blende bornite calcite California Carolina cent chalcopyrite chloride chlorination Colorado Comstock lode concentration considerable copper country-rock County Cripple Creek cyanide cyanide process Deep Mines deposits depth diorite discovered discovery district dollars drift employed extraction feet free-gold furnace galena gangue gneiss gold and silver gold production Gold-bearing granite gravel gray copper Gulch Hill hydraulic Ibid Idaho inches iron Jour lead limestone located mercury method Mexico mill Mineral Industry Mineral Resources Mines and Minerals Montana Mountain Nevada North occur operations ore-bodies ounces output oxide placer mines placers porphyry precious metals Press probably production of gold pyrite pyrrhotite quantities quartz quartz-veins quartzites Rept rhyolite River rocks schists shaft siliceous silver production Silver-bearing slate sluices smelting solution South stamps stope sulphides sulphurets surface TABLE tellurides tellurium tetrahedrite timber tion tons Total tunnel Utah yield zinc